Drill row operation line crawler pump truck and working method thereof

Abstract

The invention relates to a drilling row operation line crawler pump truck and a working method thereof, the drilling row operation line crawler pump truck comprises a crawler chassis, hydraulic supporting legs and a multi-way valve are fixedly mounted at the front end of the crawler chassis, and the rear end of the crawler chassis is connected with a lifting platform through a hinge; a PLC control cabinet, a hydraulic station, a hydraulic control valve set, a plunger pump, a metering device and a lifting portal frame are sequentially and fixedly arranged on the crawler chassis in the length direction. A crusher, a blowout prevention box and a slag slurry conveying pump are fixedly mounted on the lifting platform, the blowout prevention box is located on one side of the feeding end of the crusher, and the slag slurry conveying pump is located on one side of the discharging end of the crusher; the upper portion of the crawler chassis and the edge of the lifting platform are fixedly provided with a protective cover, and a hydraulic pressure gauge is arranged on the outer surface of the protective cover in an embedded mode. The hydraulic punching device has the effect that the problems that gas drainage and coal cinder treatment are disjointed, a pipeline is prone to being blocked, metering is not accurate and movement is limited in the hydraulic punching operation of the outburst mine are solved.

Description

Technical Field

[0001] This application relates to the field of mining equipment, and in particular to a tracked pump truck for a drilling line and its operating method. Background Technology

[0002] When using hydraulic perforation drilling for gas control in outburst-prone mines, multiple drilling rigs often need to operate simultaneously, generating large amounts of coal slag water containing gas and large coal particles. Currently, in this scenario, gas drainage and coal slag treatment are usually carried out in separate steps, resulting in insufficient system coordination, low overall control efficiency, and increasingly prominent challenges to the complexity of the working environment and safety.

[0003] Current equipment used for coal slag water treatment generally has the following limitations: First, the gas extraction and coal slag conveying systems are separate, resulting in poor functional integration and affecting continuous operation efficiency; second, large particles in the coal slag water easily clog the pipes, leading to low system reliability; third, the coal slag water metering method is relatively simple, making it difficult to achieve accurate monitoring and control; and fourth, the overall mobility of the equipment is poor, the conveying distance is limited, and it is difficult to adapt to the changing working conditions underground.

[0004] To address the aforementioned issues, this invention focuses on the unique working conditions of drilling and pumping operations in coal mines. Through integrated structural design, optimized connection methods for key components, and defined operating parameters, it aims to provide a compact and functionally coordinated tracked pump truck for drilling and pumping operations, along with corresponding operating methods. This addresses the systemic shortcomings of existing equipment in areas such as simultaneous gas-coal slag treatment, anti-clogging design, accurate metering, and mobile transportation, thereby improving the overall efficiency and adaptability of gas management. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of disconnect between gas drainage and coal slag treatment, easy pipeline blockage, inaccurate metering, and limited mobility in hydraulic drilling operations in coal mines. This application provides a tracked pump truck for drilling and rafting operations and its working method.

[0006] To achieve the above objectives, the technical solution provided in this application for a tracked pump truck for a drilling and blasting line and its working method is as follows:

[0007] In a first aspect, this application discloses a tracked pump truck for a drilling rig, comprising a tracked chassis, with hydraulic outriggers and a multi-way valve fixedly installed at the front end of the tracked chassis, and a lifting platform connected to the rear end of the tracked chassis via a hinge; a PLC control cabinet, a hydraulic station, a hydraulic control valve group, a plunger pump, a metering device, and a lifting gantry are sequentially fixedly arranged on the tracked chassis along its length; a crusher, a blowout preventer, and a slurry conveying pump are fixedly installed on the lifting platform, with the blowout preventer located on the feed end side of the crusher and the slurry conveying pump located on the discharge end side of the crusher; a protective cover is fixedly installed on the upper part of the tracked chassis and the edge of the lifting platform, and a hydraulic gauge is embedded in the outer surface of the protective cover.

[0008] Preferably, the output shaft of the crusher and the input shaft of the slurry conveying pump are coaxially and fixedly connected by a rigid coupling, and the output shaft of the crusher and the input shaft of the slurry conveying pump start and stop synchronously.

[0009] Preferably, the plunger pump includes a plunger cylinder, a hydraulic cylinder, and a hydraulic rod. The plunger cylinder and the hydraulic cylinder are coaxially assembled, and the hydraulic cylinder is fitted outside the hydraulic rod and can move along the axial direction of the hydraulic rod.

[0010] Preferably, the metering device consists of two identical metering tanks, which are connected to the discharge port of the slurry conveying pump via a three-way valve. The three-way valve is switched by a PLC control cabinet to achieve alternating feeding, metering, and discharge.

[0011] Preferably, the bottom of the lifting gantry is fixed to the tracked chassis, and a hydraulic cylinder is provided at the top of the lifting gantry. The lifting gantry is connected to the upper surface of the lifting platform through the hydraulic cylinder. The hydraulic cylinder is connected to the hydraulic control valve group, and the lifting platform is driven to rise and fall vertically by extending and retracting the hydraulic cylinder.

[0012] Preferably, a screen is horizontally fixed inside the blowout preventer, and an exhaust port with a sealing flange is provided on the top of the blowout preventer. The exhaust port is used to connect to a negative pressure gas extraction pipeline.

[0013] Preferably, the blowout preventer box has two discharge ports at the bottom. One discharge port is sealed to the feed port of the crusher through a pipe, and the other discharge port is sealed to the feed port of the slurry conveying pump through a pipe. Both pipes are equipped with one-way valves.

[0014] Preferably, the outlet of the metering device is sealed to the inlet of the plunger pump via a high-pressure wear-resistant pipe, and the outlet of the plunger pump is connected to a remote conveying pipe.

[0015] Preferably, the protective cover is a welded steel plate structure, and the protective cover covers the outer surface of the PLC control cabinet, hydraulic station, hydraulic control valve group, plunger pump and metering device. The protective cover is detachably connected to the tracked chassis.

[0016] Secondly, this application discloses a working method for a crawler pump truck in a drilling and rafting operation line, which is applied to a crawler pump truck in a drilling and rafting operation line as described in the first aspect, including the following steps: the crawler pump truck in the drilling and rafting operation line moves to the drilling point of the outburst mine, deploys the hydraulic outriggers to fix the equipment, starts the hydraulic station through the PLC control cabinet, monitors the hydraulic system pressure in real time with the hydraulic gauge, and adjusts the lifting gantry and lifting platform to align the feed inlet of the blowout preventer box with the coal slag water discharge outlet of the drilling rig;

[0017] Seal the exhaust port on the top of the blowout preventer to the mine negative pressure pipeline, and start the crusher, slurry conveying pump and metering device. The crusher and slurry conveying pump rotate synchronously.

[0018] The coal slag water produced by the drilling rig enters the blowout preventer box, and the gas is drawn into the negative pressure pipeline through the exhaust port. The coal slag water is screened by a screen. Particles larger than the screening precision enter the crusher. After being crushed by the crusher, they fall into the slurry conveying pump and are transported to the metering device by the slurry conveying pump. Particles smaller than the screening precision and water directly enter the slurry conveying pump and are transported to the metering device by the slurry conveying pump.

[0019] The slurry conveying pump pressurizes and delivers the mixed slurry water to the metering device. The PLC control cabinet controls two metering tanks to alternately receive the slurry water. After metering, the slurry water is delivered to the plunger pump.

[0020] Driven by a hydraulic system, the plunger pump transports the metered slag and water to the designated treatment location via a remote pipeline.

[0021] After the operation is completed, the crusher, slurry conveying pump and metering device are turned off, the negative pressure pipeline connection is disconnected, the hydraulic outriggers are retracted, and the tracked chassis of the crawler pump truck of the drilling and rafting line begins to run.

[0022] Compared with the prior art, the present invention provides a tracked pump truck for drilling and blasting operations and its working method, which has the following beneficial effects:

[0023] 1. By integrating the gas extraction and coal slag water conveying system, the two previously separate processes are integrated into one tracked pump truck, realizing integrated continuous operation of "drilling, extraction and drainage", effectively solving the problem of process disconnection and greatly shortening the gas treatment cycle;

[0024] 2. Addressing the pain point of large coal slag particles easily clogging pipelines, the optimized structural layout and core component design enhance the ability to instantly crush and smoothly transport coal slag water, thereby significantly reducing the risk of system blockage and improving the equipment's operational stability and continuous operation capability in complex underground environments.

[0025] 3. The tracked chassis design enhances the mobility of the equipment in narrow and complex underground tunnels, breaking through the limitations of the conveying distance of fixed equipment; at the same time, it integrates more accurate metering and monitoring functions, providing reliable data support for optimizing the punching and extraction process parameters, and realizing more precise process control. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a tracked pump truck for a drilling line according to an embodiment of this application.

[0027] Figure 2 yes Figure 1A structural schematic diagram of a crawler pump truck for a drilling and rafting operation line from another perspective.

[0028] Figure 3 This is a schematic diagram of the metering device in a tracked pump truck for a drilling operation line according to an embodiment of this application.

[0029] Figure 4 This is a cross-sectional structural diagram illustrating the cooperation relationship between the crusher and the slurry conveying pump in a tracked pump truck for a drilling operation line according to an embodiment of this application.

[0030] Figure 5 This is a cross-sectional structural schematic diagram of the plunger pump in a tracked pump truck for a drilling and rafting operation line according to an embodiment of this application.

[0031] Figure 6 This is a flowchart illustrating the working method of a tracked pump truck for a drilling operation line according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Tracked chassis; 2. Hydraulic outriggers; 3. Multi-way valve; 4. Lifting platform; 5. PLC control cabinet; 6. Hydraulic station; 7. Hydraulic control valve group; 8. Piston pump; 81. Piston cylinder; 82. Hydraulic cylinder; 83. Hydraulic rod; 9. Metering device; 91. Metering tank; 10. Lifting gantry; 11. Crusher; 12. Blowout preventer; 13. Slurry conveying pump; 14. Protective cover; 15. Hydraulic gauge; 16. Rigid coupling; 17. Hydraulic cylinder. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] Firstly, this application discloses a tracked pump truck for a drilling rig and its operating method. (Refer to...) Figure 1 and Figure 2 A tracked pump truck for a drilling rig includes a tracked chassis 1. Hydraulic outriggers 2 and a multi-way valve 3 are fixedly installed at the front end of the tracked chassis 1, and a lifting platform 4 is connected to the rear end of the tracked chassis 1 via a hinge. A PLC control cabinet 5, a hydraulic station 6, a hydraulic control valve group 7, a plunger pump 8, a metering device 9, and a lifting gantry frame 10 are sequentially fixed along the length of the tracked chassis 1. A crusher 11, a blowout preventer 12, and a slurry conveying pump 13 are fixedly installed on the lifting platform 4, with the blowout preventer 12 located on the feed end side of the crusher 11 and the slurry conveying pump 13 located on the discharge end side of the crusher 11. A protective cover 14 is fixedly installed on the upper part of the tracked chassis 1 and the edge of the lifting platform 4, and a hydraulic gauge 15 is embedded in the outer surface of the protective cover 14.

[0035] Specifically, the tracked chassis 1 serves as the mobile carrier for the equipment, enabling it to move in complex mining environments. The tracked chassis 1 can be implemented by installing multiple wheels underneath the chassis to form a wheeled chassis, thereby facilitating the movement of the equipment.

[0036] Furthermore, hydraulic outriggers 2 and a multi-way valve 3 are fixedly mounted on the front end of the tracked chassis 1. The hydraulic outriggers 2 provide stable support during equipment operation. The multi-way valve 3 controls the fluid distribution of the hydraulic system. The multi-way valve 3 can be implemented using a combination of a simple check valve and a manually switching valve, controlling the on / off state of only one hydraulic circuit at a time.

[0037] Correspondingly, a lifting platform 4 is hinged to the rear end of the tracked chassis 1. The lifting platform 4 is used to support some of the processing equipment and its height is adjustable. The lifting platform 4 can be implemented as a rigid platform fixedly welded to the tracked chassis 1 with a non-adjustable height, or it can be raised and lowered using a manual winch and wire rope, requiring the operator to manually crank the winch to raise or lower the platform.

[0038] Along its length, the tracked chassis 1 is sequentially equipped with a PLC control cabinet 5, a hydraulic power unit 6, a hydraulic control valve group 7, a piston pump 8, a metering device 9, and a lifting gantry 10. For example, the PLC control cabinet 5 can be a simple relay control box, using hard-wired logic to control the equipment's start and stop. The hydraulic power unit 6 can be an independent hydraulic power unit separate from the pump truck, connected to the pump truck via external hoses.

[0039] A crusher 11, a blowout preventer 12, and a slurry conveying pump 13 are fixedly installed on the lifting platform 4. The blowout preventer 12 can be an open water collection tank for collecting coal slag water. The slurry conveying pump 13 can be a centrifugal pump.

[0040] A hydraulic gauge 15 is embedded in the outer surface of the protective cover 14. The hydraulic gauge 15 is used to monitor the pressure of the hydraulic system in real time.

[0041] The following example will provide a more detailed explanation of the above technical solution:

[0042] At a drilling rig operation site in a prominent mine, location A requires the treatment and transportation of gas-containing coal slag water generated during drilling. First, the tracked pump truck of the drilling rig operation line moves to the operation site via its tracked chassis 1. Upon arrival at the designated location, the operator activates the hydraulic system via the PLC control cabinet 5, driving the hydraulic outriggers 2 to extend and securely support the pump truck on the ground, ensuring stability during operation. Simultaneously, the lifting gantry 10 drives the lifting platform 4 via hydraulic cylinders 17, adjusting the blowout preventer 12 installed on the platform to a height aligned with the coal slag water discharge port of the drilling rig, achieving seamless connection.

[0043] The drilling rig begins operation, and the resulting gas-containing coal slag water is discharged into the blowout preventer (BOP) 12. Inside the BOP 12, the gas and coal slag water undergo preliminary separation, with the gas being extracted through the exhaust port. The coal slag water undergoes preliminary screening within the BOP 12; coal slag particles larger than a certain size are guided to the crusher 11 for crushing, while particles smaller than this size and water directly enter the slurry pump 13. The crusher 11 crushes the large coal slag particles to a transportable size, which, along with the directly entering fine particles and water, flows into the slurry pump 13. The slurry pump 13 pressurizes the mixed slag water and delivers it to the metering device 9.

[0044] Reference Figure 1 and Figure 3 The metering device 9 consists of two metering tanks 91. Under the coordination of the PLC control cabinet 5, the two metering tanks 91 alternately receive, meter, and discharge materials. When one metering tank 91 receives the slag and water and completes metering, the other metering tank 91 transports the metered slag and water to the plunger pump 8. Driven by the power provided by the hydraulic station 6, the plunger pump 8 transports the metered slag and water through a remote pipeline at high pressure to a designated treatment location, such as a sedimentation tank or treatment plant on the ground. Throughout the process, the PLC control cabinet 5 monitors and controls the operating status of each component in real time, while the hydraulic gauge 15 continuously displays the hydraulic system pressure, ensuring that the equipment operates safely and efficiently.

[0045] After the operation is completed, the PLC control cabinet 5 issues an instruction to shut down the crusher 11, slurry conveying pump 13 and metering device 9 in sequence. The connection between the negative pressure pipeline and the blowout preventer box 12 is disconnected, the hydraulic outriggers 2 are retracted, the tracked chassis 1 is restarted, and the pump truck drives away from the work site.

[0046] The cooperation between the lifting platform 4 and the lifting gantry 10 allows the blowout preventer box 12 to flexibly connect with the discharge ports of drilling rigs at different heights, solving the problem of poor adaptability of existing equipment. The integrated arrangement of the PLC control cabinet 5, hydraulic station 6, hydraulic control valve group 7, plunger pump 8, and metering device 9 realizes integrated and automated operation of gas drainage, coal slag crushing, slurry transportation, and accurate metering. This is in stark contrast to the existing technology where gas drainage and coal slag treatment are carried out in separate steps with poor functional integration, significantly improving the overall treatment efficiency.

[0047] In tracked pump trucks used in drilling rigs, the crusher 11 and the slurry conveying pump 13 are key components for processing coal slag water. However, if the crusher 11 and the slurry conveying pump 13 are driven independently, it may lead to a speed mismatch between the two, which in turn affects the smooth transport of coal slag water and may even cause material blockage or a decrease in processing efficiency. In addition, independent driving and control may also increase the complexity and energy consumption of the system.

[0048] In this regard, refer to Figure 1 and Figure 4 This application further proposes that the output shaft of the crusher 11 and the input shaft of the slurry conveying pump 13 are coaxially and fixedly connected by a rigid coupling 16, and the output shaft of the crusher 11 and the input shaft of the slurry conveying pump 13 start and stop synchronously.

[0049] The coaxial and fixed connection between the output shaft of the crusher 11 and the input shaft of the slurry pump 13 means that the rotating shaft of the crusher 11 after crushing the material and the rotating shaft of the slurry pump 13 for receiving and conveying the material are on the same straight line, and the two are firmly connected together in some way to form a whole. The rigid coupling 16 is a mechanical component used to connect two shafts, enabling them to rotate together and transmit torque; it does not have the ability to compensate for relative displacement between the two shafts. The function of the rigid coupling 16 here is to ensure that there is no relative movement between the output shaft of the crusher 11 and the input shaft of the slurry pump 13 when transmitting torque, maintaining strict coaxiality, thereby achieving synchronous rotation.

[0050] In the tracked pump truck of the drilling rig, both the crusher 11 and the slurry pump 13 are mounted on the lifting platform 4 to treat the coal slag water generated by the drilling rig. To ensure the continuity and efficiency of the coal slag water treatment process, this application uses a rigid coupling 16 to coaxially and fix the output shaft of the crusher 11 and the input shaft of the slurry pump 13. When the crusher 11 starts working, the rotational motion of its output shaft is directly transmitted to the input shaft of the slurry pump 13 through the rigid coupling 16, thereby driving the slurry pump 13 to start synchronously.

[0051] Conversely, when the crusher 11 stops working, the slurry conveying pump 13 also stops synchronously, ensuring that the material crushed by the crusher 11 can be immediately received and conveyed by the slurry conveying pump 13, avoiding the accumulation of material at the discharge port of the crusher 11 or the slurry conveying pump 13 running dry.

[0052] In one specific implementation, the crusher 11 can be a jaw crusher 11 or a hammer crusher 11, and its output shaft is usually a solid shaft with a keyway. The slurry pump 13 can be a centrifugal slurry pump, and its input shaft is also usually a solid shaft with a keyway. When the PLC control cabinet 5 issues a start command, the motor starts, thereby simultaneously driving the crusher 11 and the slurry pump 13 to start working; when the PLC control cabinet 5 issues a stop command, the motor stops, and the crusher 11 and the slurry pump 13 also stop.

[0053] By coaxially and fixedly connecting the output shaft of the crusher 11 and the input shaft of the slurry conveying pump 13 through a rigid coupling 16, and achieving synchronous start and stop of both, this application effectively solves the problems of speed mismatch, poor material conveying, and complex system control that may occur when the crusher 11 and the slurry conveying pump 13 are driven independently. The tight mechanical coupling and synchronous control ensure that the crushed coal slag water can be conveyed in a timely and continuous manner, avoiding blockages caused by material accumulation at the discharge end of the crusher 11, and improving the efficiency and continuity of coal slag water treatment. At the same time, it simplifies the drive and control system, reduces the complexity of the equipment and potential failure points, making the entire drilling and dredging line tracked pump truck more stable and reliable when handling coal slag water, and making operation and maintenance more convenient.

[0054] Reference Figure 1 and Figure 5 This application further proposes a plunger pump 8 including a plunger cylinder 81, a hydraulic cylinder 82 and a hydraulic rod 83. The plunger cylinder 81 and the hydraulic cylinder 82 are coaxially overlapped and assembled. The hydraulic cylinder 82 is fitted outside the hydraulic rod 83 and can move axially along the hydraulic rod 83.

[0055] The plunger pump 8 is a positive displacement pump that changes the volume of the working chamber by the reciprocating motion of the plunger within the pump cylinder, thereby achieving the intake and discharge of liquid. Its function is to raise low-pressure liquids to high-pressure conditions, and it is commonly used to transport high-viscosity media containing solid particles. The plunger cylinder 81 is the core working chamber of the plunger pump 8, within which the plunger reciprocates to achieve the intake and discharge of fluid.

[0056] Specifically, the hydraulic cylinder 82 receives hydraulic oil from the hydraulic station 6 through the hydraulic control valve group 7, driving the piston inside the hydraulic cylinder 82 (or directly driving the body of the hydraulic cylinder 82) to reciprocate along the hydraulic rod 83. Since the plunger cylinder 81 and the hydraulic cylinder 82 are coaxially overlapped, the reciprocating motion of the hydraulic cylinder 82 directly drives the plunger inside the plunger cylinder 81 to reciprocate, thereby realizing the intake and discharge of slag and water. This makes the drive mechanism and pumping mechanism of the plunger pump 8 highly integrated, effectively reducing transmission links, reducing energy loss, and significantly reducing the overall size of the plunger pump 8.

[0057] In one specific implementation, the plunger pump 8 can be a hydraulically driven reciprocating plunger pump 8. The hydraulic cylinder 82 can be a double-acting hydraulic cylinder 82, with its cylinder body and the outer shell of the plunger cylinder 81 designed to be coaxially overlapped. For example, the piston rod of the hydraulic cylinder 82 can be directly connected to the plunger of the plunger cylinder 81, or the cylinder body of the hydraulic cylinder 82 itself can serve as a driving component, directly pushing the plunger of the plunger cylinder 81. The hydraulic rod 83 can be fixed on the base of the plunger pump 8, serving as a guide and support for the movement of the hydraulic cylinder 82.

[0058] Through the above technical solution, the plunger cylinder 81 of the plunger pump 8 and the hydraulic cylinder 82 are coaxially overlapped and assembled, and the hydraulic cylinder 82 is fitted outside the hydraulic rod 83 and can move axially along the hydraulic rod 83, achieving a high degree of integration and compactness of the plunger pump 8 drive mechanism. This effectively reduces the overall size and weight of the plunger pump 8, enabling the entire drilling line tracked pump truck to integrate a more powerful pumping capacity within a limited space. Simultaneously, the simplified drive path reduces mechanical transmission components, lowers the failure rate and maintenance costs, and improves the operational reliability and stability of the equipment under harsh working conditions. This provides the drilling line tracked pump truck with a more stable and reliable high-pressure conveying capability for slag and water, thereby improving the operational efficiency and safety of the entire drilling line.

[0059] Reference Figure 1 and Figure 3 This application further proposes that the above-mentioned metering device 9 consists of two metering tanks 91 with the same structure. The two metering tanks 91 are connected to the discharge port of the slurry conveying pump 13 through a three-way valve, and the three-way valve is switched by the PLC control cabinet 5 to realize alternating feeding, metering and discharge.

[0060] Specifically, the metering device 9 is designed as two identical metering tanks 91. By setting up two identical metering tanks 91, parallel or alternating operation can be achieved, thereby improving metering efficiency and continuity. The two metering tanks 91 are connected to the discharge port of the slurry conveying pump 13 through a three-way valve. The three-way valve is a valve with three ports, which can control the flow direction of the fluid and realize diversion or merging.

[0061] Furthermore, the three-way valve here is used to direct the slurry from the discharge port of the slurry pump 13 to either of the two metering tanks 91, or to discharge the slurry from the metering tank 91 after metering is completed. The entire metering process is controlled by the PLC control cabinet 5 to switch the three-way valve to achieve alternating feeding, metering, and discharging.

[0062] PLC control cabinet 5, as a programmable logic controller, is the core unit of automated control equipment and processes. It is used to coordinate the operation of the two metering tanks 91 and the three-way valve to ensure the continuity and accuracy of the metering process.

[0063] For example, PLC control cabinet 5 can be pre-programmed to automatically switch the three-way valve based on the liquid level sensor or time signal, realizing alternating operation of feeding into one tank and discharging into another; or, PLC control cabinet 5 can receive operator instructions or system feedback and dynamically adjust the switching logic of the three-way valve to adapt to different operational needs.

[0064] When the slurry from the discharge port of the slurry pump 13 needs to enter the metering device 9, the PLC control cabinet 5 will control the three-way valve to switch according to the preset program or real-time status, guiding the slurry into one of the metering tanks 91 for feeding and metering. At the same time, the other metering tank 91 may have completed metering and switched to the discharge state through the three-way valve, transporting the metered slurry out. This alternating feeding, metering, and discharge working mode ensures the continuity of the slurry treatment process, avoids operation interruptions caused by a single metering device 9 waiting for feeding or discharge, significantly improves the efficiency of the entire drilling and slurry operation line, and enables the metering process and slurry transportation process to be efficiently connected, forming a smooth operation cycle.

[0065] The following is a specific example illustrating this. The metering device 9 may include two metering tanks 91, each with a volume of 1 cubic meter. Each metering tank 91 is equipped with a high-precision level sensor to monitor the liquid level of the slurry in real time. Its internal programming logic is set as follows: when the liquid level in metering tank 91A reaches a preset value (e.g., 0.9 cubic meters), the PLC control cabinet 5 immediately drives the three-way valve to switch, causing the slurry from the slurry conveying pump 13 to flow into metering tank 91B for feeding. Simultaneously, metering tank 91A begins its discharge operation, conveying the metered slurry to the plunger pump 8. When the liquid level in metering tank 91B reaches the preset value, the PLC control cabinet 5 again drives the three-way valve to switch, causing the slurry to flow into metering tank 91A, while metering tank 91B begins discharging. This cycle repeats continuously, achieving continuous metering and conveying of the slurry.

[0066] Reference Figure 1 This application further proposes that the bottom of the lifting gantry frame 10 is fixed to the tracked chassis 1, and the top of the lifting gantry frame 10 is provided with a hydraulic cylinder 17. The lifting gantry frame 10 is connected to the upper surface of the lifting platform 4 through the hydraulic cylinder 17. The hydraulic cylinder 17 is connected to the hydraulic control valve group 7. The lifting platform 4 is driven to rise and fall in the vertical direction by the extension and retraction of the hydraulic cylinder 17.

[0067] Among them, the lifting gantry frame 10 is a frame structure, and the fixing method can be achieved by welding, bolting, riveting and other methods.

[0068] The hydraulic cylinder 17 is an actuator that converts hydraulic energy into mechanical energy, achieving linear reciprocating motion through the extension and retraction of the piston rod. It is mounted on top of the lifting gantry 10, enabling it to apply thrust or pull force to the lifting platform 4 from above, thereby driving the vertical movement of the platform. The hydraulic cylinder 17 can be a single-acting or double-acting cylinder. For example, one or more double-acting hydraulic cylinders 17 can be used, with their cylinder bodies fixed to the top crossbeam of the gantry via pins or flanges, and the piston rod extending downwards.

[0069] Hydraulic cylinder 17 is connected to hydraulic control valve assembly 7, which is the core control element of the hydraulic system. Hydraulic control valve assembly 7 controls the flow direction, pressure, and flow rate of hydraulic oil, thereby controlling the movement of hydraulic actuators. The connection between hydraulic cylinder 17 and hydraulic control valve assembly 7 means that the movement of hydraulic cylinder 17 is controlled by the commands of hydraulic control valve assembly 7. For example, high-pressure resistant hydraulic hoses can be used to connect the cylinder to the valve assembly via threaded connectors, ensuring sealed transmission of hydraulic oil. Hydraulic control valve assembly 7 can integrate directional valves, relief valves, throttle valves, etc., to achieve precise speed and direction control of the cylinder.

[0070] Hydraulic cylinder 17 extends and retracts under the control of hydraulic control valve group 7. The thrust or pull force generated by it directly acts on lifting platform 4, thereby enabling the platform to rise or fall vertically under the guidance of the gantry frame. When hydraulic control valve group 7 sends high-pressure oil into the piston chamber of hydraulic cylinder 17, the piston rod extends, pushing lifting platform 4 upward; when high-pressure oil is sent into the rod chamber, the piston rod retracts, pulling lifting platform 4 downward. To ensure smooth lifting, flow control valves or proportional valves can be used to precisely adjust the extension and retraction speed of the cylinder.

[0071] Hydraulic cylinder 17 is connected to hydraulic control valve assembly 7 via high-pressure hydraulic lines, enabling hydraulic control valve assembly 7 to precisely control the flow and pressure of hydraulic oil. When the height of lifting platform 4 needs to be adjusted, PLC control cabinet 5 sends a command to hydraulic control valve assembly 7, which then controls the flow of hydraulic oil into or out of hydraulic cylinder 17, driving the piston rod of hydraulic cylinder 17 to extend and retract. The extension and retraction of hydraulic cylinder 17 directly acts on lifting platform 4, and under the guidance of lifting gantry 10, lifting platform 4 can rise and fall smoothly and precisely in the vertical direction.

[0072] This application further proposes that a screen is horizontally fixed inside the blowout preventer 12, and an exhaust port with a sealed flange is provided on the top of the blowout preventer 12 for connecting to a negative pressure gas extraction pipeline. The blowout preventer 12 is a container used to collect, buffer, and pre-treat coal slag water discharged from the borehole. Its main function is to prevent the coal slag water from splashing during discharge, while providing a controlled space for subsequent solid-liquid separation and gas emission.

[0073] The screening action of the screen effectively removes larger impurities from the coal slag water, thus protecting the downstream crusher 11 and slurry conveying pump 13 from impact and blockage by large particles. The screen can be fixed in various ways, such as welding, bolting, or snap-fit, ensuring its stable position during operation. The screen is horizontally fixed inside the blowout preventer 12, allowing the coal slag water to flow evenly across the screen surface, achieving efficient solid-liquid separation. Horizontal fixing helps utilize gravity to retain larger particles on the screen, while smaller particles and water pass through smoothly. This fixing method also facilitates the installation, maintenance, and replacement of the screen.

[0074] The vent with a sealed flange is a channel for venting gas from inside the blowout preventer 12. By installing the sealed flange, an airtight connection is ensured between the vent and the external connecting pipeline, effectively preventing internal gas leakage and preventing outside air from entering. The negative pressure gas extraction pipeline is a pipeline system specifically designed to extract harmful gases such as methane from mines or equipment. By connecting to the negative pressure gas extraction pipeline, the accumulated methane gas inside the blowout preventer 12 can be safely and effectively extracted using negative pressure and transported to a specialized treatment system for processing or discharge, thereby reducing the methane concentration, eliminating the risk of explosion, and ensuring operational safety.

[0075] The solution in this application achieves its function in the following way: When the slag water produced by the drilling rig enters the blowout preventer 12, a horizontally fixed screen inside the blowout preventer 12 first performs preliminary solid-liquid separation. Larger solid particles are trapped by the screen, while smaller particles and water pass through the screen and enter the subsequent processing stage. At the same time, harmful gases such as methane that may be carried in the slag water will accumulate inside the blowout preventer 12. In order to safely and effectively handle these gases, the top of the blowout preventer 12 is equipped with an exhaust port with a sealed flange, which is connected to a negative pressure gas extraction pipeline. Through the negative pressure generated by the negative pressure gas extraction pipeline, the methane gas inside the blowout preventer 12 is continuously extracted, thereby avoiding the accumulation of methane inside or around the blowout preventer 12 and significantly reducing the risk of gas explosion.

[0076] Reference Figure 1 This application further proposes that the bottom of the blowout preventer box 12 is provided with two discharge ports. One discharge port is sealed to the feed port of the crusher 11 through a pipe, and the other discharge port is sealed to the feed port of the slurry conveying pump 13 through a pipe. Both pipes are provided with one-way valves.

[0077] Specifically, the two discharge ports at the bottom of the blowout preventer 12 are physical openings for discharging materials from inside the blowout preventer 12. One discharge port is sealed to the feed inlet of the crusher 11 via a pipe, which serves as a channel for material to flow from the blowout preventer 12 to the crusher 11. This sealed connection ensures no leakage during material transport and maintains a pressure or negative pressure environment within the system. The other discharge port is sealed to the feed inlet of the slurry pump 13 via a pipe, transporting material from the blowout preventer 12 to the slurry pump 13.

[0078] Through the above technical solution, by providing two independent and sealed discharge ports, which are respectively connected to the crusher 11 and the slurry conveying pump 13, the coal slag water can be effectively diverted according to its treatment requirements. Simultaneously, one-way valves are installed in both conveying pipelines to effectively prevent material from flowing back from downstream equipment to the blowout preventer 12, avoiding cross-contamination and system blockage, thereby significantly improving the efficiency of the tracked pump truck in treating coal slag water and the operational stability of the system.

[0079] The proposed solution uses a metering device 9 to accurately measure the slag and slurry. Its outlet is then sealed to the inlet of a plunger pump 8 via a high-pressure wear-resistant pipe. This ensures that the metered abrasive slag and slurry can be safely and leak-free transported through the specially designed high-pressure wear-resistant pipe before entering the plunger pump 8. This effectively resists the scouring and wear of the pipe by the slag and slurry and withstands pressure fluctuations between the metering device 9 and the plunger pump 8. Subsequently, the plunger pump 8 pressurizes the received slag and slurry, giving it the kinetic energy required for long-distance transport. The pressurized slag and slurry is discharged from the outlet of the plunger pump 8 and directly connected to a remote transport pipeline. This remote transport pipeline also possesses high-pressure bearing and wear-resistant characteristics, enabling the stable and efficient transport of the high-pressure abrasive slag and slurry to a designated treatment location far from the work site.

[0080] By using the above technical solution, a high-pressure wear-resistant pipe is used to seal the connection between the outlet of the metering device 9 and the inlet of the plunger pump 8, and the outlet of the plunger pump 8 is connected to a remote conveying pipeline. This application effectively solves the technical problems of easy wear of pipelines, easy leakage at the connection and limited conveying efficiency during long-distance high-pressure conveying of abrasive slag water.

[0081] Reference Figure 1 This application further proposes that the protective cover 14 is a welded steel plate structure, and the protective cover 14 covers the outer surface of the PLC control cabinet 5, hydraulic station 6, hydraulic control valve group 7, plunger pump 8 and metering device 9. The protective cover 14 is detachably connected to the tracked chassis 1.

[0082] The protective cover 14 covers the outer surface of the PLC control cabinet 5, hydraulic station 6, hydraulic control valve group 7, piston pump 8 and metering device 9, aiming to achieve comprehensive protection for these key internal components, prevent them from being directly damaged by the external environment (such as dust, water, gas, falling rocks, etc.), and ensure the stable operation of the equipment under harsh working conditions.

[0083] Secondly, referring to Figure 6 This application further proposes a working method for a tracked pump truck used in a drilling and blasting line, including the following steps:

[0084] S1. The crawler pump truck of the drilling line moves to the drilling point of the outburst mine, deploys the hydraulic outriggers 2 to fix the equipment, starts the hydraulic station 6 through the PLC control cabinet 5, and monitors the hydraulic system pressure in real time through the hydraulic gauge 15. Adjust the lifting gantry 10 and the lifting platform 4 to align the feed inlet of the blowout preventer box 12 with the coal slag water discharge outlet of the drilling rig.

[0085] S2. Seal the exhaust port at the top of the blowout preventer 12 to the mine negative pressure pipeline, and start the crusher 11, slurry conveying pump 13 and metering device 9. The crusher 11 and slurry conveying pump 13 rotate synchronously.

[0086] S3. The coal slag water produced by the drilling rig enters the blowout preventer box 12. The gas is drawn into the negative pressure pipeline through the exhaust port. The coal slag water is screened by a screen. Particles larger than the screening precision enter the crusher 11. After being crushed by the crusher 11, they fall into the slurry conveying pump 13 and are conveyed to the metering device 9 by the slurry conveying pump 13. Particles smaller than the screening precision and water directly enter the slurry conveying pump 13 and are conveyed to the metering device 9 by the slurry conveying pump 13.

[0087] S4, the slurry conveying pump 13 pressurizes and conveys the mixed slurry water to the metering device 9. The PLC control cabinet 5 controls the two metering tanks 91 to alternately receive the slurry water. After completing the metering, the slurry water is conveyed to the plunger pump 8.

[0088] S5 and plunger pump 8, driven by the hydraulic system, transport the metered slag and water to the designated treatment location through a remote conveying pipeline;

[0089] S6. After the operation is completed, shut down the crusher 11, slurry conveying pump 13 and metering device 9, disconnect the negative pressure pipeline connection, retract the hydraulic outriggers 2, and the tracked chassis 1 of the crawler pump truck of the drilling line starts to run.

[0090] In the above method, the tracked pump truck of the drilling rig is moved to the work point and fixed. This step aims to accurately position and stabilize the tracked pump truck of the drilling rig at the work site, so as to provide a stable foundation for subsequent coal slag water treatment operations.

[0091] This application's solution systematically plans the operation process of tracked pump trucks in drilling and rafting operations, forming a complete closed loop for coal slag water treatment, from equipment positioning, safe connection, multi-stage treatment, continuous metering to high-pressure transportation. This method fully utilizes the integrated components of the tracked pump truck, including the crusher 11, slurry conveying pump 13, metering device 9, and gas extraction blowout preventer 12. The PLC control cabinet 5 precisely coordinates and controls each link, especially ensuring the synchronous rotation of the crusher 11 and slurry conveying pump 13, and the alternating operation of the two metering tanks 91, guaranteeing the continuity and efficiency of the treatment process. Simultaneously, the sealed connection between the blowout preventer 12 and the negative pressure pipeline effectively ensures the safety of mine operations. The entire method organically combines various functional modules to achieve safe, efficient, and precise treatment and long-distance transportation of coal slag water.

[0092] The following is a concrete example. Suppose that at a drilling site in a mine, the tracked pump truck on the drilling line first autonomously travels to the predetermined position via its tracked chassis 1. The operator then activates the hydraulic outriggers 2 via the control panel to securely support the ground.

[0093] Subsequently, the PLC control cabinet 5 starts the hydraulic station 6, and the hydraulic gauge 15 displays the system pressure in real time to ensure it is within the safe range. The operator precisely controls the height of the lifting platform 4 by adjusting the hydraulic cylinder 17 on the lifting gantry 10, so that the feed inlet of the blowout preventer 12 is seamlessly connected to the outlet of the coal slag water pipeline discharged by the drilling rig.

[0094] Next, the exhaust port on top of the blowout preventer 12 is tightly connected to the mine's negative pressure gas extraction pipeline via a quick connector. After confirming that all connections are correct, the crusher 11, slurry conveying pump 13, and metering device 9 are started sequentially via the PLC control cabinet 5, with the motors of the crusher 11 and slurry conveying pump 13 set to synchronous operation mode.

[0095] When the drilling rig starts operating, the generated slag water carrying methane gas enters the blowout preventer 12. The methane gas is quickly drawn away by the negative pressure pipeline, while the slag water flows to the screen at the bottom of the blowout preventer 12. The screen guides slag particles larger than the preset aperture to the crusher 11 for crushing, and the crushed material then falls into the slurry conveying pump 13.

[0096] Simultaneously, fine particles smaller than the screen mesh size and water directly enter the slurry conveying pump 13. The slurry conveying pump 13 pressurizes the mixed slurry and water, and transports it through pipelines to the metering device 9. The PLC control cabinet 5 automatically switches the three-way valve based on the liquid level sensor signal in the metering tank 91, allowing the two metering tanks 91 to alternately receive, meter, and discharge materials. The metered slurry and water are then transported to the plunger pump 8. Driven by the hydraulic system, the plunger pump 8 generates high pressure, pumping the slurry and water through high-pressure wear-resistant pipelines to a designated treatment pool outside the mine.

[0097] After the operation is completed, the operator shuts down all processing equipment in sequence through PLC control cabinet 5, disconnects the negative pressure pipeline connection, retracts the hydraulic outriggers 2, restarts the tracked chassis 1, and drives the equipment away from the work site.

[0098] Through the above technical solution, this application provides a systematic and standardized operation method for tracked pump trucks in drilling and blasting lines. By accurately positioning the equipment, ensuring a safe gas drainage mechanism, providing efficient multi-stage treatment of coal slag water, and implementing a continuous metering and transportation process, it effectively solves problems such as poor continuity, high risk of gas leakage, and inaccurate metering in the coal slag water treatment process during mine drilling.

[0099] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tracked pump truck for a drilling rig, characterized in that: The system includes a tracked chassis (1), with hydraulic outriggers (2) and a multi-way valve (3) fixedly installed at the front end of the tracked chassis (1), and a lifting platform (4) connected to the rear end of the tracked chassis (1) via a hinge; a PLC control cabinet (5), a hydraulic station (6), a hydraulic control valve group (7), a plunger pump (8), a metering device (9), and a lifting gantry (10) are fixedly installed on the tracked chassis (1) along its length direction; a crusher (11), a blowout preventer (12), and a slurry conveying pump (13) are fixedly installed on the lifting platform (4), with the blowout preventer (12) located on the feed end side of the crusher (11) and the slurry conveying pump (13) located on the discharge end side of the crusher (11); a protective cover (14) is fixedly installed on the upper part of the tracked chassis (1) and the edge of the lifting platform (4), and a hydraulic gauge (15) is embedded in the outer surface of the protective cover (14).

2. The tracked pump truck for a drilling rig operation line according to claim 1, characterized in that: The output shaft of the crusher (11) and the input shaft of the slurry conveying pump (13) are coaxially and fixedly connected by a rigid coupling (16), and the output shaft of the crusher (11) and the input shaft of the slurry conveying pump (13) start and stop synchronously.

3. The tracked pump truck for a drilling rig operation line according to claim 2, characterized in that: The plunger pump (8) includes a plunger cylinder (81), a hydraulic cylinder (82), and a hydraulic rod (83). The plunger cylinder (81) and the hydraulic cylinder (82) are coaxially assembled. The hydraulic cylinder (82) is fitted outside the hydraulic rod (83) and can move along the axial direction of the hydraulic rod (83).

4. A tracked pump truck for a drilling rig operation line according to claim 3, characterized in that: The metering device (9) consists of two metering tanks (91) with the same structure. The two metering tanks (91) are connected to the discharge port of the slurry conveying pump (13) through a three-way valve, and the three-way valve is switched by the PLC control cabinet (5) to realize alternating feeding, metering and discharge.

5. A tracked pump truck for a drilling rig operation line according to claim 4, characterized in that: The bottom of the lifting gantry (10) is fixed to the tracked chassis (1), and a hydraulic cylinder (17) is provided on the top of the lifting gantry (10). The lifting gantry (10) is connected to the upper surface of the lifting platform (4) through the hydraulic cylinder (17). The hydraulic cylinder (17) is connected to the hydraulic control valve group (7). The lifting platform (4) is driven to rise and fall in the vertical direction by the extension and retraction of the hydraulic cylinder (17).

6. A tracked pump truck for a drilling rig operation line according to claim 2, characterized in that: The blowout preventer (12) has a screen fixed horizontally inside, and the top of the blowout preventer (12) is provided with an exhaust port with a sealing flange. The exhaust port is used to connect to a negative pressure gas extraction pipeline.

7. A tracked pump truck for a drilling rig operation line according to claim 3, characterized in that: The blowout preventer (12) has two discharge ports at the bottom. One discharge port is sealed to the feed port of the crusher (11) through a pipe, and the other discharge port is sealed to the feed port of the slurry conveying pump (13) through a pipe. Both pipes are equipped with one-way valves.

8. A tracked pump truck for a drilling rig operation line according to claim 4, characterized in that: The outlet of the metering device (9) is sealed to the inlet of the plunger pump (8) through a high-pressure wear-resistant pipe, and the outlet of the plunger pump (8) is connected to a remote conveying pipe.

9. A tracked pump truck for a drilling rig operation line according to claim 2, characterized in that: The protective cover (14) is a welded steel plate structure. The protective cover (14) covers the outer surface of the PLC control cabinet (5), hydraulic station (6), hydraulic control valve group (7), plunger pump (8) and metering device (9). The protective cover (14) is detachably connected to the tracked chassis (1).

10. The working method of a tracked pump truck for a drilling rig according to claim 3, applied to a tracked pump truck for a drilling rig according to any one of claims 1-9, characterized in that, Includes the following steps: The crawler pump truck of the drilling line moves to the drilling point of the outburst mine, deploys the hydraulic outriggers (2) to fix the equipment, starts the hydraulic station (6) through the PLC control cabinet (5), and monitors the hydraulic system pressure in real time with the hydraulic gauge (15). Adjust the lifting gantry (10) and the lifting platform (4) to align the feed port of the blowout preventer (12) with the coal slag water discharge port of the drilling rig. Connect the exhaust port at the top of the blowout preventer (12) to the mine negative pressure pipeline in a sealed manner, start the crusher (11), slurry conveying pump (13) and metering device (9), and the crusher (11) and slurry conveying pump (13) rotate synchronously. The coal slag water produced by the drilling rig enters the blowout preventer (12), and the gas is drawn into the negative pressure pipeline through the exhaust port. The coal slag water is screened by a screen. Particles larger than the screening precision enter the crusher (11). After being crushed by the crusher (11), they fall into the slurry conveying pump (13) and are conveyed to the metering device (9). Particles smaller than the screening precision and water directly enter the slurry conveying pump (13) and are conveyed to the metering device (9). The slurry conveying pump (13) pressurizes and conveys the mixed slurry water to the metering device (9). The PLC control cabinet (5) controls the two metering tanks (91) to alternately receive the slurry water. After completing the metering, the slurry water is conveyed to the plunger pump (8). Driven by a hydraulic system, the plunger pump (8) transports the metered slag and water to the designated treatment location via a remote pipeline; After the operation is completed, shut down the crusher (11), slurry conveying pump (13) and metering device (9), disconnect the negative pressure pipeline connection, retract the hydraulic outriggers (2), and the tracked chassis (1) of the crawler pump truck of the drilling line starts to run.

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